2026-05-28T21:28:03Zhttps://www.radar-service.eu/oai/OAIHandler10.35097/15762024-02-05T15:46:48Zradar4kit
10.35097/1576
Braun, Tobias
Tobias
Braun
Helmholtz-Institut Ulm
Dinda, Sirshendu
Sirshendu
Dinda
Helmholtz-Institut Ulm
Karkera, Guruprakash
Guruprakash
Karkera
Helmholtz-Institut Ulm
Melinte, Georgian
Georgian
Melinte
Helmholtz-Institut Ulm
Diemant, Thomas
Thomas
Diemant
Helmholtz-Institut Ulm
Kübel, Christian K. U.
Christian K. U.
Kübel
0000-0001-5701-4006
Institut für Nanotechnologie, Helmholtz-Institut Ulm, Karlsruhe Nano Micro Facility
Fichtner, Maximilian
Maximilian
Fichtner
Helmholtz-Institut Ulm
Pammer, Frank
Frank
Pammer
Helmholtz-Institut Ulm
Multi-Component PtFeCoNi Core-Shell Nanoparticles on MWCNTs as Promising Bifunctional Catalyst for Oxygen Reduction and Oxygen Evolution Reactions
Karlsruhe Institute of Technology
2023
2023
Engineering
TEM
XRD
XPS
TGA
Open Access
Creative Commons Attribution Non Commercial Share Alike 4.0 International
Braun, Tobias
Dinda, Sirshendu
Karkera, Guruprakash
Melinte, Georgian
Diemant, Thomas
Kübel, Christian K. U.
0000-0001-5701-4006
Fichtner, Maximilian
Pammer, Frank
The development of commercially viable fuel cells and metal air batteries requires effective and cheap bifunctional catalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). Multi-component Pt-Fe-Co-Ni nanoparticles on multi-walled carbon nanotubes (MWCNTs) were synthesized by wet chemistry route via NaBH4 reduction of metal salts, followed by sintering at different temperatures. The catalyst demonstrates an excellent ORR activity and a promising OER activity in 0.1 m KOH, with a bi-functional overpotential, ΔE of 0.83 V, which is comparable to the values of Pt/C or RuO2. Furthermore, it shows outstanding long-term stability in ORR and OER, namely diffusion limited current density at a potential of 0.3 V decreased just by 5.5% after 10000 cycles in ORR. The results of the PFCN@NT300 indicate a significant effect of the substitution of Pt by the transition metal (TM) and the formation of nanoparticles on the catalytic performance, especially in the OER.
TEM data in Velox and Digital Micrograph format, XPS data in CASA format, TGA as text file, XRD as text file with angle and intensity.
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